Eraser-cleaner.



L CLARK.

ERASER CLEANER.

APPLICATION FILED AUG. 13. 1913. v l ,1 9U,5 1 6. Patented July 11, 1916.

2 SHEET$-SHEET 1 jzyl,

L. CLARK.

ERASER CLEANER.

APPLICATION FILED AUG. 13, I913.

1, 1 90,5 11. 5. Patented July 11, 1916.

2 SHEETSSHEET 2.

LOGAN CLARK, OF FORT COLLINS, COLORADO.

ERAS'ER-CLEANER.

Specification of Letters Patent.

Patented July 11, 1916.

Application filed August 13, 1913. Serial 1\To. 784,624.

To all whom it may concern Be it known that I, LOGAN CLARK, a citizen of the United States, residing at Fort Collins, in the county of Larimer and State of Colorado, have invented certain new and useful Improvements in Eraser-Cleaners, of which the following is a specification.

This invention relates to detergent devices and more particularly to a device of this nature for cleaning erasers such as are used for the cleaning of blackboards in school rooms.

The primary object of this invention is the provision of a device of this nature by means of which a multiple number of erasers may be cleaned with the minimum amount of manual labor and also in a short space of time.

Another object of this invention is the provision of a device for carrying out the primary object above mentioned which embodies an outer casing, constructed of foraminated material and an internal rotor which engages erasers and moves them about the interior of the casing thoroughly removing the chalk dust from the erasers and also the provision of a receptacle placed beneath the outer casing so as to catch and retain the chalk dust which is removed from the erasers.

With the foregoing and other objects in view, this invention consists in such novel features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings and claimed.

In describing this invention in detail reference will be had to the accompanying drawings wherein like characters of reference designate like or corresponding parts throughout the several views, and in which,

Figure 1 is a side elevation of the improved eraser cleaner; Fig. 2 is an end view of the same; Fig. 3 is a cross-sectional view through the eraser cleaner; Fig. 4 is a central sectional view through the eraser cleaner; Fig. 5 is a detailed perspective view of the manner of mounting the receptacle for receiving the chalk dust upon the outer casing; Fig. 6 is a detailed perspective view of the rotor and, Fig. 7 is a detailed sectional view of the upper edge of the outer casing showing the means for inserting the erasers into the casing.

Referring more particularly to the drawings, 1 designates a casing which is circular in cross section and constructed of any suitable type of foraminated material such as meshed wire or the like and which is reinforced by plates 2 and 3 upon which the ends of the foraminated material are secured. The plates 2 and 8 have supporting legs 5 and 6 connected thereto as is shown at 7. The supporting legs 5 and 6 are constructed of U shaped pieces of metal and have their lower ends bent outwardly, forming foot portions 8 so as to provide a firmer and more secure resting support for the casing. The supporting legs 5 and 6 are connected and further braced near their lower ends by means of cross rods 9 which extend from one supporting leg to the other.

The casing 1 which is constructed of the foraminated material terminates at its upper side in two shoulders 10 and 11, be T tween which shoulders is seated a plate 12, which is constructed of wood. The plate 12 has a portion thereof cut away and the sides which are adjacent the cutout portion are provided with grooves 13 formed therein 1 which receive the tongues 14 which are formed upon the sides of a slidable door 15. The slidable door 15 has a handle 16 which is constructed of a strap of sheet metal formed thereupon so as to facilitate the sliding movement of the door for the opening of the cut out portion which is formed in the plate 12 so that erasers may be inserted into the interior of the casing. The out out portion, for which the door 15 forms a closure extends only a. part of the longitudinal length of the plate 12 as is clearly shown in Fig. 4: of the drawings. The foraminated material of which the casing 1 is constructed is secured to the edges of the plate 12 by means of strips 17.

Secured to the plates 2 and 3 at the lower side of the same are metallic plates 19 and 20. The metallic plates 19 and 20 are curved upon themselves so as to form guide ways as well as supporting structures for the flanges 21 which are formed upon the sides of a drawer 22. The drawer 22 is. slidably mounted in the metallic plates 19 and 20 and is placed directly beneath the center of the casing 1 so that the chalk dust or the like which is extracted from the erasers (not shown) will fall through the foraminated material into the drawer from whence it may be removed when desired. The drawer 22 has a handle 23 which is constructed of a metallic strap secured thereto,

to facilitate the sliding movement of the same.

A rod 25 is rotatably seated in bearings 26. The bearings 26 are centrally located upon the plates 2 and 3. The rod 25 which extends entirely through the center of the casing 1 has a crank handle 27 mounted upon its outer end which protrudes beyond the end of the plate 2. The crank handle 27 forms means for imparting rotary motion to the rod 25. The portion of the rod 25 which extends longitudinally through the central portion of the casing 1 has a plurality of radially extending arms 28, 29, 30 and 31. The radially extending arms 28 and 31- are placed upon the rod 25 so that they will be near the inner edges of the plates 2 and 3 and the arms 28 and 31 have their outer ends connected by meansof strips 32 and 33 which extend longitudinally through the casing parallel with the rod 25. The arms 28 and 31 are long enough so that the strips 32 will be adjacent the inner side of the foraminated material of which the casing 1 is constructed and also so that they will engage any erasers (not shown) which are placed within the casing through the cut out portion formed in thefplate 12.

The radially extending arms 29 and 30 aredisposed at right angles to the arms 28 and 31*and form beaters for aiding in the cleansing of the erasers (not shown). The strips 32 and 33 are braced by a brace rod 34 which is mounted upon the rod 25 and substantially equi-distant from each of the arms 28 and 31. The brace rod 3 1 is connected to the strips 32 and 33 in any suitable manner and increases the stability of the frame. The rod 25 and the various radially extending arms and the strips 32 and 33 form a rotor for cleansing the erasers (not shown).-

2 The plate 12 has a piece of non-foraminated material 35 connected'to one side of the same and extending downwardly, fitting snugly against the outer surface of the foraminated material of which the casing 1 is constructed. The non-foraminated member 35 is provided so as to prevent the chalk dust or the like which is extracted from the erasers (not shown) from being blown or forced out of the foraminated receptacle and aids in causing the dust to fall into the drawer 22.

From the foregoing description taken in connection with the accompanying drawings the advantages of the construction and of the method of operation of the improved eraser cleaner will be readily apparent to those skilled in the art to which this invention appertains and, while in the foregoing description, the principle of operation of this invention has been described together with various features of construction, it is to be understood that certain minor features of construction, combination and arrangement of parts may be altered to suit practical conditions provided such alterations are comprehended within the scope of what is claimed.

\Vhat is claimed is:

In an eraser cleaner, a cylindrical foraminated casing, supporting legs for the casing, a rotor mounted within the casing, a plurality of uniformly spaced arms extending radially from the rotor some of which are longer than others, strips connecting the free ends of the longest arms and arranged in closely spaced relation with the interior of the casing for engaging and agitating erasers within the casing, the shortest arms being arranged alternately with the other arms to constitute beaters for acting upon the erasers when agitated whereby to efiiciently clean the erasers, a dust retaining receptacle removably associated with the bottom of the casing, said casing being provided with an opening in its upper surfaces to permit of the insertion of erasers, a removable closure for said opening, and a piece of nonforaminated material mounted upon one side of said casing for preventing chalk dust cleaned from the erasers from blowing therethrough.

In testimony whereof I afiix my signature in presence of two Witnesses.

LOGAN CLARK.

Witnesses:

Ln ROY LIGGETT, C. A. PoLLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, 13.0. 

